I agree... They are two different platforms firing the same ammunition, not necessarily carried or used at the same time. A .41 revolver, for example, has it's own merits vs a .41 carbine, they can be viewed exclusively. In a place where ammo and components might be hard to come by, component commonality between 2 or more firearms might be an advantage, even if you load them differently... as I do. My pistol gets Unique loads, but the rifle, to take advantage of the longer barrel, gets something slower like IMR4227 or W296, all other components being the same.